radeon/llvm: use ceil intrinsic instead of llvm.AMDIL.round.posinf

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

src/gallium/drivers/radeon/AMDGPUISelLowering.cpp

@@ -139,8 +139,6 @@ SDValue AMDGPUTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
                                                   Op.getOperand(2));
     case AMDGPUIntrinsic::AMDIL_round_nearest:
       return DAG.getNode(ISD::FRINT, DL, VT, Op.getOperand(1));
-    case AMDGPUIntrinsic::AMDIL_round_posinf:
-      return DAG.getNode(ISD::FCEIL, DL, VT, Op.getOperand(1));
   }
 }
 

src/gallium/drivers/radeon/AMDILIntrinsics.td

@@ -146,8 +146,6 @@ let TargetPrefix = "AMDIL", isTarget = 1 in {
           UnaryIntFloat;
   def int_AMDIL_round_neginf : GCCBuiltin<"__amdil_round_neginf">,
           UnaryIntFloat;
-  def int_AMDIL_round_posinf : GCCBuiltin<"__amdil_round_posinf">,
-          UnaryIntFloat;
   def int_AMDIL_round_zero : GCCBuiltin<"__amdil_round_zero">,
           UnaryIntFloat;
   def int_AMDIL_acos : GCCBuiltin<"__amdil_acos">,

src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c

@@ -1117,8 +1117,8 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx)
 	bld_base->op_actions[TGSI_OPCODE_TXF].intr_name = "llvm.AMDGPU.txf";
 	bld_base->op_actions[TGSI_OPCODE_TXQ].fetch_args = tex_fetch_args;
 	bld_base->op_actions[TGSI_OPCODE_TXQ].intr_name = "llvm.AMDGPU.txq";
-	bld_base->op_actions[TGSI_OPCODE_CEIL].emit = build_tgsi_intrinsic_nomem;
-	bld_base->op_actions[TGSI_OPCODE_CEIL].intr_name = "llvm.AMDIL.round.posinf.";
+	bld_base->op_actions[TGSI_OPCODE_CEIL].emit = build_tgsi_intrinsic_readonly;
+	bld_base->op_actions[TGSI_OPCODE_CEIL].intr_name = "ceil";